论文部分内容阅读
通过优化连铸过程中的结晶器铜板使用方法,实现完全消除由于结晶器铜板引起板坯表面裂纹,同时结晶器铜板镀层的过钢量从2万t提高到6万t;为有效去除板坯中大颗粒夹杂物,改进中间包流场设计,保留稳流器,取消挡墙和挡坝,使得钢水的运动轨迹和停留时间发生变化,从而显著降低板坯中10μm以上大颗粒夹杂物的数量、并能将夹杂物的最大尺寸控制在20μm以内;通过上述工艺实践,实现大幅提高奥氏体不锈钢板坯质量。
By optimizing the use of mold copper in the continuous casting process, the surface crack of the mold caused by the mold copper plate is completely eliminated, and the amount of steel in the mold copper plating is increased from 20,000 t to 60,000 t. In order to effectively remove the slab Medium and large grain inclusions, improving the flow field design of the tundish, retaining the flow stabilizer, eliminating the retaining wall and dam, making the movement trajectory and residence time of the molten steel change, thus significantly reducing the number of large particle inclusions in the slab of 10μm or more , And can control the maximum size of inclusions within 20μm; through the above process practice, to achieve substantial increase austenitic stainless steel slab quality.